Urine Strainer

You may be trying to pass a kidney stone. A urine strainer is used to collect a kidney stone from the urine stream.

Collection method

  • Each time you urinate, do so in a jar.

  • Pour the urine from the jar through the strainer and into the toilet.

  • Save any particles or stones.

  • Wash your hands when you are done.

  • Keep doing this until 24 hours after your pain stops. By then, if there was a kidney stone, it should have passed out of your bladder. Some stones dissolve into sandlike particles. These pass right through the strainer. In that case, you won't ever see a stone.

    Closeup of hands pouring urine through strainer into toilet.

Follow-up care

Save any stone that you find in a small container, and bring it to your healthcare provider for analysis. This will help your healthcare provider find out what type of stone was passed. This information may be used to help prevent some types of stones from forming again. Follow your provider's advice on fluid intake, possible diet changes, and follow-up appointments.

When to get medical advice

Contact your healthcare provider right away if symptoms of a kidney stone return, such as:

  • Sharp pain in your lower belly, side, or lower back

  • Fever of 100.4°F (38°C) or higher, or as directed by your provider

  • Vomiting

  • Bloody or bad-smelling urine

  • Pain increases or gets worse with urination

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